turkmentv/app/Models/PropertyType.php

<?php

namespace App\Models;

use Illuminate\Database\Eloquent\Model;
use Backpack\CRUD\CrudTrait;

class PropertyType extends Model
{
    use CrudTrait;

    /*
    |--------------------------------------------------------------------------
    | GLOBAL VARIABLES
    |--------------------------------------------------------------------------
    */

    protected $table = 'propertytypes';
    // protected $primaryKey = 'id';
     public $timestamps = false;
    // protected $guarded = ['id'];
    protected $fillable = ['title','description','filter_value', 'color'];
    // protected $hidden = [];
    // protected $dates = [];

    /*
    |--------------------------------------------------------------------------
    | FUNCTIONS
    |--------------------------------------------------------------------------
    */

    /*
    |--------------------------------------------------------------------------
    | RELATIONS
    |--------------------------------------------------------------------------
    */

    public function folder(){
        return $this->hasOne('App\Models\Folder','property_id');
    }

    /*
    |--------------------------------------------------------------------------
    | SCOPES
    |--------------------------------------------------------------------------
    */

    /*
    |--------------------------------------------------------------------------
    | ACCESORS
    |--------------------------------------------------------------------------
    */

    /*
    |--------------------------------------------------------------------------
    | MUTATORS
    |--------------------------------------------------------------------------
    */
}